Onetap1
Onetap1 t1_je1xhac wrote
Fetchez la vache.
Onetap1 t1_ja2npyb wrote
Reply to comment by Onetap1 in Olympic champion swimmer Buster Crabbe looking cool, and giving some great health advice :) (1935) by thinkofanamefast
Amongst the many theories about Crabb's disappearance;
"Crabb's age and poor health caused by his heavy drinking and smoking had made him unsuitable for the mission that he had been assigned."
Stick that one in your pipe and smoke it, Crabbe.
Onetap1 t1_j9zrc22 wrote
Reply to comment by workyworkaccount in Olympic champion swimmer Buster Crabbe looking cool, and giving some great health advice :) (1935) by thinkofanamefast
Different Buster Crabb.
Onetap1 t1_j8wozaa wrote
Reply to If soot is highly combustible, why doesn't it burn off before it accumulates? by TheIronKurtin
Because of convection mostly.
The fire mostly happens in the bed, the bottom and you add new fuel on top of the hot burning coals.
The heat radiated from the fire bed causes the new fuel to break down (pyrolysis) into flammable gases, vapours and solid particles.
However, hot air rises, so the air flow goes upwards, through the bed of the fire. The excess air and combustion products go upwards, through the as-yet unburnt fresh fuel, and it carries away some of the combustible gases, vapours & particles upwards, away from the fire bed. It doesn't get burned and that's the soot.
Look up downdraught gasifier stoves and secondary combustion.
Onetap1 t1_j8rly4g wrote
Reply to comment by Highjumper21 in What do bacteria living in mechanical ventilation feed on ? by malahchi
It was a tragic irony that they'd survived WW1, WW2, Korea, Vietnam and/or whatever else, only to be killed by contaminated water droplets in the USA.
Onetap1 t1_j8hrv1m wrote
The post below was something I posted on a UK motoring forum 20 years ago, so I've just copied and pasted it.
https://www.honestjohn.co.uk/forum/post/index.htm?t=6781
I also mentioned car/truck windscreen washer bottles as a legionella risk, which was 8 years before the UK's HSE issued a warning about using screen wash to kill the bacteria.
https://www.bbc.co.uk/news/10293519
"The wet cooling towers are the problem, as stated by many others.
The heat removed by the cooling process is rejected at the condenser, where the refrigerant vapour is condensed into a liquid and it's latent heat of condensation is released.
In wet AC systems the condensers are cooled by water. The water is cooled at the cooling tower and recirculated. The cooling tower ponds tend to collect all the particles in the air, limescale, leaves, insects, etc, and are often at lukewarm temperatures, providing ideal conditions for the growth of many organisms. The water is intentionally sprayed into the air to cause some of it to evaporate, creating an aerosol of water droplets containing any organisms that have been cultivated in the water.
The legionella bacteria is present in water everywhere and will multiply if given favourable conditions.
The risk of infection is much greater for the elderly or infirm, so the disease has affected many hospitals, in the past. The risk wasn?t recognized until a group of elderly ex-servicemen, attending an American Legion Convention were felled by a hotel cooling tower in Philadelphia in 1976. The disease had existed prior to that, but had been regarded as yet another strain of pneumonia.
The (UK) HSE's Code of Practice on Legionnaires' disease, L8, states that a foreseeable risk exists in;
a) water systems incorporating a cooling tower;
b) water systems incorporating an evaporative condenser;
c) hot and cold water systems;
d) other systems containing water at which is likely to exceed 20 degC and which may release a spray or aerosol."
Onetap1 t1_j8hqv1t wrote
Reply to comment by JoeFelice in What do bacteria living in mechanical ventilation feed on ? by malahchi
They probably inhaled contaminated water droplets outside.
There was an outbreak in Cumbria, UK, 15 years or more back and it was random people passing through the vicinity who were infected.
Onetap1 t1_j8hqn3v wrote
Reply to comment by Elfich47 in What do bacteria living in mechanical ventilation feed on ? by malahchi
The cooling towers weren't 'properly maintained' by modern standards because the hazard wasn't recognized.
Cooling towers mostly vanished from AC systems in subsequent decades because the maintenance & chemical water treatment regimes are now so onerous and expensive. Air cooled condensers are more usual now.
Similarly, spray humidifiers were replaced with steam humidifiers, etc..
Onetap1 t1_j8hcjsd wrote
Reply to comment by VinhBlade in What do bacteria living in mechanical ventilation feed on ? by malahchi
https://en.wikipedia.org/wiki/Legionnaires%27_disease#Epidemiology
Elderly men, possibly with a large proportion of smokers or ex-smokers. It had been thought the outbreak was a form of pneumonia.
They inhaled atomized water droplets from the cooling towers that carried the bacteria.
Onetap1 t1_j8et0de wrote
They don't live in mechanical ventilation. They live in tepid water which has nutrients. Anything with warm water is hazardous.
The first case, where it was identified, killed a lot of US Legionnaires (armed forces veterans) at a convention at a hotel in Philadelphia. The source was an evaporative cooling tower, which uses evaporating water to discard waste heat from the air conditioning systems.
The thing about cooling towers is that the water is recycled from a pond in the base of the tower. It collects insects, dust leaves, limescale, etc, nutrients for bacteria. And the water is warm. The bacteria was distributed on the water droplets leaving the tower.
https://en.wikipedia.org/wiki/Legionnaires%27_disease#Epidemiology
Onetap1 t1_j5vmipf wrote
Reply to comment by BostonUniStudent in TIL that the civilian ship pilot in Dunkirk is based off a real person - Charles Lightoller, the second officer of the Titanic who sailed his own ship to save 127 servicemen at Dunkirk by flotiste
He lost 2 sons in WW2, one was an RAF bomber pilot killed on the second day of the war, one killed in 1945 during the Granville Raid.
I've no idea what the thing with the boy on the boat was about.
Onetap1 t1_j2ewqm7 wrote
Or are you a stranger without even a name,
imprisoned forever behind a glass pane.
In an old photograph, torn, tattered and stained
And fading to yellow in a brown leather frame
Onetap1 t1_j18xhui wrote
Reply to comment by Sprinklypoo in Why do we use phase change refrigerants? by samskiter
>really simply because all of the heat is contained in that phase change.
What she/he said.
It takes more energy to evaporate a pound of water than it does to melt a pound of steel.
The phase change is where most of the heat transfer happens.
Onetap1 t1_iysrpdf wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
Bye.
Onetap1 t1_iysq2e7 wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
OK. Bye.
Onetap1 t1_iyrw0gh wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
The 15 year-old internet foundation expert says I'm wrong, so it must be true.
Bye.
Onetap1 t1_iyr0mwj wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
>Glad to see you admit
I seem to have missed that bit.
Shrinkable clay sub-soil may be the phrase you're struggling to recall, Mr foundation repair professional. It's probably not the problem. You should look up the word 'Professional' in a dictionary; it doesn't mean what you seem to think in this context.
Bye.
Onetap1 t1_iyomj6c wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
> Clay based soils shrink and swell
Which would cause subsidence cracking in a wall, due to unequal movement; under pin & make good etc..
it's not a wall; think on.
>What are your credentials to support your ill founded opinion?
I retired from the free advice business and will offer no further opinions. I'm sure you'll get there eventually.
Onetap1 t1_iyok30o wrote
Reply to comment by barto5 in How to fix a leaning brick column? by Noonien
Better idea, maybe don't offer free advice to ill-mannered dullards.
Have you thought of anything that wopuld explain it leaning away from the gate yet? It's not good.
Onetap1 t1_iyod1d9 wrote
Reply to comment by tsully93 in How to fix a leaning brick column? by Noonien
>It’s leaning away from the gate…
So maybe you should have said that.
Onetap1 t1_iynofbs wrote
Reply to How to fix a leaning brick column? by Noonien
The weight of the gate (more relevant, the bending moment exerted by the gate) is overturning the column.
Maybe fix a wheel to the end of the gate and install a quadrant track for it to run on. No more weight that's overturning the column, the weight is supported by the wheel.
Onetap1 t1_iymjfnm wrote
Reply to comment by MisterD90x in [Image] Happy 80th birthday Billy Connolly by Douglasqqq
The proper clothing for such weather is a car.
Onetap1 t1_iymiv7w wrote
Reply to comment by anangrytaco in [Image] Happy 80th birthday Billy Connolly by Douglasqqq
Onetap1 t1_iyccghc wrote
Reply to comment by hellcat_uk in TIL that after the battle between the USS Constitution and HMS Guerriere, the captain of the Constitution, Isaac Hull, refused the sword of surrender from the captain of the Guerriere, James Richard Dacre, saying he could not accept it from a man who fought so gallantly by alcapwnage0007
>65% of HMS Trincomalee and over 95% of HMS Unicorn
I didn't know of those ships, thanks for that.
Tricomalee was built of Indian teak, which is probably why she's survived; I think ship worm would devour European wood in a few years. Unicorn has never sailed.
Onetap1 t1_je532jv wrote
Reply to does anyone like roald dahl's short stories by EatLikeAHippo
Tales of the Unexpected, from the 1970s, many of the early British ones were written by Dahl. I think they're on Youtube. ISTR it was Roald Dahl's Tales of the Unexpected at first.